The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2016
Filed:
Oct. 22, 2013
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Etsuko Ogasawara, Aichi, JP;
Misaki Harada, Aichi, JP;
Kazuhiro Sugie, Shizuoka, JP;
Kenji Izumi, Shizuoka, JP;
Yu Kojima, Shizuoka, JP;
Kazuhiko Shimoda, Shizuoka, JP;
Kazunari Ando, Aichi, JP;
Abstract
In a lead-acid battery including an electrode plate group housed in a cell chamberwith an electrolyte, each positive electrode plate includes a positive electrode grid made of lead or a lead alloy containing no antimony, and a positive electrode active material with which the positive electrode grid is filled. Each negative electrode plate includes a negative electrode grid made of lead or a lead alloy containing no antimony, a surface layer formed on a surface of the negative electrode grid and made of a lead alloy containing antimony, and a negative electrode active material with which the negative electrode grid is filled. A mass ratio M/Mfalls within a range of 0.70 to 1.10, where Mrepresents the mass of the positive electrode active material per cell chamber, and Mrepresents the mass of the negative electrode active material per cell chamber.